John g wyn n



J.GWYNN. Hot-Air Furnace;

Patented May 18, 1869.

are arm I oluN GW YN N, o r 1 mm, o H 1 o.

. ream Patent No. 96,095, dated May 18,1869.

nor-AIR summon.

i'ha schedule referred inizhese Letters Patent and making part of thesame.

To all'whom t't nwty. concern.- v h V c it known that I, J onn Gwrns, ofTiflin, in the county .of Seneca, andState of Ohio, have invented a newand improved Mode of ConstructingHeaters for W arming Airffor Buildings;and Ldo hereby declaim that the following is a full and exactdescription thereof, reference being had to the accompanying draws ings,and the letter'sioi reference marked thereon. Figure 1 is a perspectiveview of the front and right side, with the outer wallremoved.

Figure '2 is a front and left side, with outer and part.

f of inner wall removed, showing side of fire-box Figure 3 is a view,with the top; and radiators re mowed, showing plan of walls andfire-box. r t Figure 4 is the regulator, open and shut.

Figure'5, the castings I I. t Figure 6, the castings J and L.

Figure 7, the castings Kand M..

The nature of my invention consists in constructing a heater, soarrangedas to receiveplain sheets of iron, for the heat-radiators, whichmay be readily. displaced or replaced, without any disarrangeinent ofthe other parts of the heater, thusenabling those who use thisinvention, to renew the only destructible part, in

cumstances of its location; fol-it the Fdraught of the chimney is veryinferior, the number of radiators may .be reduced to the minimum number.if thdraught of chimney. be powerful, then the number of radiators maybe increased to advantage.

Fourth, 'the regulator,.tbrining the top of the fire box, if opened,permits the fire to play directly on the lower radiator, it the heat bei-nsuflicicnt when closed.

1 ifth,the shape of the flues insures the spreading out, in thin layers,of both fire and air, thus absorbing and transmitting all the heat thetire is"capable of generating.

Sixth, the radiators do not necessarily have to receive'the directaction of the fire, which experience shows is better avoided."

To enable others skilled in the art to make and use iny invention, 1will describe its construction and operation. i h

The fire-box A, figs. 2 and 3, is of brick, on the sides of which, atthe top edge, are several openings, for the heat to pass out into thechamber V, under the lower 7 radiator.

The regulator, fig. 4, is of cast-iron, or other suitable material,operated by moving the rod 0 c backward and forward, on the sameprincipleas a Venetian The two inner walls, D'D, figs. 1, 2, and 3, areof brick, with the openings E E, for the heat to pass into the dues F F.a

space, G G, fig. 3, left between it and the inner wall,

of from two, to five inches, in which space, by the partition-columns HH,'are formed those portions of the air and fire-fines, necessary toalter the directions of the currents. l

in mortar thereon, and reach to the outside of the front and-rear walls;then two courses of bricks are laid on it, for sixteen inches at eachend, on which are placed the castings J and K; then two more courses ofbrick are laid, as before described, on which are-placed the castings Land M, of the same shape as J andK last mentioned, but in reversepositions, from left to right, for the purpose of forming thereturn-flue for air.

the upper radiator, and allow space for the water-pan N. The top is thenclosed over, with brick or iron, or both, leaving suitable outlets forair-pipes on top, to convey'the'heated air'to the registers. Openingsare to be formed inthe left-hand outer .wall, f or the admission of coldair to the radiators, through the'space G, the size of which'openingswill be in proportion to the heater.

- The radiators P P P P P are plain sheets of iron, with no otherpreparation than making the edges parallel, and are slid into thegrooves Q Q in the castings II,JK,LandM.

When so placed, the plates marked R are screwed into their places by thenuts S S.

The fines F F in the rear, co-operate with those in the front, '1 T, asI will now explain. I

When the heat or fire passes into theflues F'F,

cenils until stopped by the brick wall at U U, when it third radiators.

enters the front lines 'l T, and ascends to the open- .ngs Y Yin thecastings L and M, and is again turned by the brick wall at U U, andenters between the two upper radiators, and leaves in-the rear of thesame-for the chimney, having thus passed over the whole of theradiating-surface.

The outer walls are also of brick, with a suitable r The inner wallsIll-D are'built up three inches higher than the top of the, firebox, andthe castings I I laid The outer walls are then builtnp to asuificientheight to form a chamber for the heated air above l throughthe openings E E, from the chamber V, it-as- It leaves them throughthei'ront openings X X, and

Now, the air to be warmed enters at the opening in the outer wall, andthen, ascending between the outer and inner wallsD D, is turned by theflange Z on the casting J, into the opening between the castings I andJ, and is thus passed between the first and second radiators; thenmaking its exit on the opposite side, it ascends between the walls untilstopped by the flange Z. On the casting L it enters between the thirdand fourth radiators, making its exit on the opposite side, andasce'nding into the chamber over the top, or fifth radiator, is ready tobe conducted to the registers.

I am aware that the flues formed by the radiators may be connected infront and rear, thus dispensing with the flues F F and T T, but I preferthe mode described.

I am also aware that heaters have been constructed with horizontal andwith return-fines, and I disclaim either of those devices as being partof my invention.

What I claim, and wish to secure by Lett-ersPatout, is-

1. The cast-iron frames I, J, K, L, and M, and the radiators PP,'counected, as described, together with the front and rear platesmarked R R, and the peculiar form of the brick-work in which they arebuilt, for leading the fire and air in alternating, horizontal, andascending thin layers, at right angles with each other.

2. The use of a plain sheet of iron, without bend, seam, or rivet,connected to an iron frame by means of grooves, as described, forradiating-surfiice.

3. The construction of the iron frames. I, J, and K, with grooves,intended to receive the edges, and allow the withdrawaland renewal ofthe radiators P P P,

